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Hi, I would like to ask whether it is possible to test my own backend pass with LNT tool and LLVM Test Suite. I successfully installed LNT and downloaded LLVM Test Suite. Now I am able to run the tool with commant line option similar to this: lnt runtest nt --sandbox SANDBOX --cc ~/{path_to_clang}/clang --test-suite ~/{path_to_test_suite}/llvm-test-suite , but i have two main problems: 1) each run finishes with : ... 2013-02-11 10:19:34: configuring... 2013-02-11 10:19:38: building test-suite tools 2013-02-11 10:19:39: executing "nightly tests" with -j1... 2013-02-11 10:36:57: e...

On Fri, Mar 4, 2016 at 11:28 AM, Tilmann Scheller <tilmann at osg.samsung.com> wrote: > Hi Sedat, > > On 03/03/2016 08:09 AM, Sedat Dilek via llvm-dev wrote: >> >> It might be that a CLANG generated with LTO/PGO speeds up the build. >> Can you confirm this? > > Yes, a Clang host compiler built with LTO or PGO is generally faster than an > -O3 build. >

...> > Alas, there is an easier way to generate the profdata file! > > If you look in the clang repo at <clang>/cmake/caches/README.txt you’ll see > an explanation of how to use the PGO CMake cache file. The basic idea is you > run: > > $ cmake -G <generator> -C <path_to_clang>/cmake/caches/PGO.cmake <source > dir> > $ <build tool> stage2-instrumented-generate-profdata > > If you let that run for a few hours or so, it will place a profdata file in > your build directory. This takes a really long time because it builds clang > twice, and y...